Deploy the kubeless helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the Kubeless Helm chart on an OpenShift cluster, we can use Pulumi's Kubernetes provider. First, ensure you have access to your OpenShift cluster and the `kubectl` command-line tool is configured to communicate with it.

Kubeless is a Kubernetes-native serverless framework that allows you to deploy function code without worrying about the underlying infrastructure. To manage applications on Kubernetes with Pulumi, Helm charts are a convenient way to package applications and manage their deployment.

We will use the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. This resource allows us to deploy Helm charts to a Kubernetes cluster.

The following program in TypeScript deploys the Kubeless Helm chart on an OpenShift cluster:

```typescript
import * as k8s from "@pulumi/kubernetes";

// Define the settings for the Kubeless Helm chart.
const kubelessChart = new k8s.helm.v3.Chart("kubeless", {
    // Specify the repository and name of the chart.
    chart: "kubeless",
    repo: "https://kubeless.io/kubeless",
    version: "1.0.7", // Replace with the desired version of Kubeless.
    namespace: "kubeless", // Specify the namespace where Kubeless will be installed.
    values: {
        // Custom values for the Kubeless chart can be provided here, if needed.
    },
    // It's common practice to run OpenShift with RBAC enabled, so
    // you might need to adapt RBAC settings accordingly.
    transformations: [
        (obj: any) => {
            // If the cluster uses RBAC and if required, modify object metadata here.
            // Example modification: Add labels or annotations.
        }
    ]
});

// Export the resources created.
export const chartName = kubelessChart.metadata.apply(metadata => metadata.name);
```

This program does the following:

- Imports the necessary Pulumi Kubernetes package.
- Creates an instance of `Chart`, specifying the `kubeless` chart from its Helm repository.
- Optionally, provides custom configuration values. In this example, no custom values are provided, but they can be included as needed.
- Applies any necessary transformations for compatibility with your OpenShift cluster's configurations, which might include RBAC settings.

To deploy this Helm chart to your OpenShift cluster using Pulumi:

1. Save this code to a file named `index.ts`.
2. Run `pulumi up` to deploy the changes. This will initiate the deployment of the Kubeless Helm chart to your OpenShift cluster.

Please adjust the version number of the `kubeless` chart and the namespace as needed. Also, review the Helm chart's documentation for any particular settings that you might want to customize for your use case.